High speed printer with print hammer control



y 25, 1965 A. D. M GREGOR ETAL. 3,185,075

HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14. 1961 24 Sheets-Sheet 1 1 AkV/A/ 0.

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Y 1445: M. MV/A/j 4e D m 66w, 0%.

ATTORNEY y 1955 A. D. M GREGOR ETAL 3,135,075

HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14, 1961 24 Sheets-Sheet 2 25, 1965 A. D. M GREGOR ETAL 3,135,075

HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14. 1961 24 Sheets-Sheet 3 y 1965 A. n. MOGREGOR ETAL 3, 5

HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14. 1961 24 Sheets-Sheer;

M y 1965 A. D. M GREGOR ETAL 3,135,075

HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14. 1961 24 Sheets-Sheet 6 1965 A. D. MGGREGOR ETAL 3,185,075

HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14, 1961 2,4 Sheets-Sheet '7 May 25, 1965 A. D. M GREGOR ETAL 3,185,075

IGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14. 1961 24 Sheets-Sheet 8 May 25, 1965 A. D. M GREGOR ETAL HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14. 1961 24 Sheets-Sheet 10 y 5, 1965 A. D. MGGREGOR ETAL 3,185,075

HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14, 1961 24 Sheets-Sheet 11 59 K@ A ll I Wm. M? m II v III/1111711111! -Illlll' III 1965 A. D. M GREGOR ETAL 3,185,075

HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14, 1961 24 Sheets-Sheet l2 May 25, 1965 A. D. M GREGOR ETAL HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14, 1961 24 Sheets-Sheet 13 M y 1965 A. D. M GREGOR ETAL 3,185,075

HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14. 1961 24 Sheets-Sheet 14 WNW J WNW NM May 25, 1965 A. o. M GREGOR ETAL 3,185,075

HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL 24 Sheets-Sheet 15 Filed Sept. 14, 1961 8 v. a u,

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HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14, 1961 24 Sheets-Sheet 16 wmh QWM

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May 25, 1965 A. D. M GREGOR ETAL 3,185,075

HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14, 1961 24 Sheets-Sheet 17 24 Sheets-Sheet 18 A. D. MOGREGOR ETAL HIGH SPEED PRIJNTER WITH PRINT HAMMER CONTROL Filed Sept. 14, 1961 May 25, 1965 www A. D. M GREGOR ETAL 3,185,075

HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14, 1961 May 25, 1965 24 Sheets-Sheet 19 QWM A. D. M GREGOR ETAL HIGH SPEED PRINTER WITH PRINT HAMMER CONTROL Filed Sept. 14. 1961 I May 25, 1965 24 Sheets-Sheet 20 WEN g R E i RQM h WWW k IE1 wk \Ri Ab .wwhk 3*. I51 EIQ 

1. IN A PRINTER HAVING A PRINT DRUM WITH CHARACTERS TO BE PRINTED FORMED THEREON, A PRINT HAMMER MOUNTED FOR RECIPROCATING MOVEMENT TOWARD AND AWAY FROM SAID DRUM AND A CONTINUOUSLY ROTATED CAM FOR IMPACTING SAID HAMMER AGAINST ONE OF SAID CHARACTERS ON SAID DRM, THE COMBINATION OF A MOVABLE ARMATURE, A PLURALITY OF COOPERATING LEVERS OPERATIVELY ASSOCIATING SAID ARMATURE WITH SAID HAMMER, SPRING MEANS BIASING SAID ARMATURE IN ONE DIRECTION, AND MEANS FOR HOLDING SAID ARMATURE AGAINST THE FORCE OF SAID SPRING MEANS, SAID HOLDING MEANS COMPRISING A POLE PIECE ATTRACTING SAID ARMATURE AND A COIL ADAPTED WHEN ENERGIZED TO CANCEL THE ATTRACTING FORCE OF SAID POLE PIECE AND THEREBY RELEASE SAID ARMATURE, FOR MOVEMENT IN SAID ONE DIRECTION, RESPECTIVE COOPERATING LEVERS EACH 